closely compacted in substance 浓密的 this water is denser than the surrounding sea. 这里的水比周围的海密度大。 ■having the constituent parts crowded closely together 稠密的 an estuary dense with marine life. 海洋生物丰富的入海口。 ■(figurative)(of a text) hard to understand because of complexity of ideas (喻)(文章)复杂难懂的 ■(informal)(of a person) stupid (非正式)(人)笨的